But there is little we can do about it. Localized development efforts (i.e. those that are not ready to work internationally) in FOSS usually either die quickly, or cannot be reached at all by non-locals.
If you do any sort of FOSS development, you HAVE to be able to communicate in english if you want your project to succeed (or to work with the vast majority of the FOSS communities and projects out there), and that's the beginning and end of it.
For users, things are less strict, but the moment you want to become an advanced user and that starts requiring access to in-depth documentation and other advanced users, chances are you will need to be able to communicate in english for most projects/applications.